Ball rack



FIG. 1 is a perspective view of a ball rack showing my new design;

FIG. 2 is a side view taken from the left of FIG. 1;

FIG. 3 is a rear view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a side view taken from the right of FIG. 1;

FIG. 6 is a top view thereof; and

FIG. 7 is a bottom view thereof. 

The ornamental design for a ball rack, substantially as shown and described. 